could wigwag
Regular verb: wigwag - wigwaged- wigwaged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could wigwag
you could wigwag
she could wigwag
we could wigwag
you could wigwag
they could wigwag 	I could be wigwaging
you could be wigwaging
she could be wigwaging
we could be wigwaging
you could be wigwaging
they could be wigwaging	I could have wigwaged
you could have wigwaged
she could have wigwaged
we could have wigwaged
you could have wigwaged
they could have wigwaged	I could have been wigwaging
you could have been wigwaging
she could have been wigwaging
we could have been wigwaging
you could have been wigwaging
they could have been wigwaging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not wigwag
you could not wigwag
she could not wigwag
we could not wigwag
you could not wigwag
they could not wigwag 	I could not be wigwaging
you could not be wigwaging
she could not be wigwaging
we could not be wigwaging
you could not be wigwaging
they could not be wigwaging	I could not have wigwaged
you could not have wigwaged
she could not have wigwaged
we could not have wigwaged
you could not have wigwaged
they could not have wigwaged	I could not have been wigwaging
you could not have been wigwaging
she could not have been wigwaging
we could not have been wigwaging
you could not have been wigwaging
they could not have been wigwaging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I wigwag?
could you wigwag?
could she wigwag?
could we wigwag?
could you wigwag?
could they wigwag? 	could I be wigwaging?
could you be wigwaging?
could she be wigwaging?
could we be wigwaging?
could you be wigwaging?
could they be wigwaging? 	could I have wigwaged?
could you have wigwaged?
could she have wigwaged?
could we have wigwaged?
could you have wigwaged?
could they have wigwaged? 	could I have been wigwaging?
could you have been wigwaging?
could she have been wigwaging?
could we have been wigwaging?
could you have been wigwaging?
could they have been wigwaging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not wigwag?
could you not wigwag?
could she not wigwag?
could we not wigwag?
could you not wigwag?
could they not wigwag? 	could I not be wigwaging?
could you not be wigwaging?
could she not be wigwaging?
could we not be wigwaging?
could you not be wigwaging?
could they not be wigwaging? 	could I not have wigwaged?
could you not have wigwaged?
could she not have wigwaged?
could we not have wigwaged?
could you not have wigwaged?
could they not have wigwaged? 	could I not have been wigwaging?
could you not have been wigwaging?
could she not have been wigwaging?
could we not have been wigwaging?
could you not have been wigwaging?
could they not have been wigwaging?